FIG. 6.
Functional response to chronic hemodynamic stress induced by 3-week TAC compared to sham-operated littermates. (A and B) Basal left-ventricular contractility (A) and relaxation (B) rates were measured in microcatheterized intact animals. Values are in thousands. (C) Immunoblot analysis of heart extracts of sham-operated and TAC-treated mice, probed with the antibodies indicated on the left. CaM, calmodulin. (D) SERCA-2a and PLB levels in sham- and TAC-treated wild-type and S100A1 null mice. ∗∗, P < 0.001 versus wild type and heterozygotes.